This isn’t breaking news, but it’s something that was news to me (and I suspect I am not alone in my former ignorance):
If you use Jetpack, the WordPress plugin containing bits for
- WordPress.com Stats
- Jetpack Comments
- Jetpacks Publicize and Sharing functions
- Photon (a free content delivery network – CDN)
- After the Deadline (grammar checker)
- Infinite Scroll
- all of the other things on this page
then you must comply with all of the WordPress.com terms of service. Do a search for “Jetpack” on that page and you’ll find that it’s quite clear that the TOS applies to Jetpack users.
If you were not using WordPress.com because your content falls outside of its terms of service, note that you shouldn’t use Jetpack either.